Balance Sheet Components (Accrued liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Accrued and other current liabilities
Payroll and related expenses	$ 5,188	$ 3,003
Accrued severance	248	2,900
Accrued commissions	4,329	4,734
Accrued manufacturing	121	225
Deferred and contingent consideration, current portion	2,431	10,146
Audit, consulting and legal fees	185	48
Accrued sales and marketing expenses	159	300
Lease liabilities	$ 1,666	$ 1,588
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Accrued and Other Current Liabilities	Accrued and Other Current Liabilities
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List]	Accrued and Other Current Liabilities	Accrued and Other Current Liabilities
Other	$ 6,971	$ 5,464
Total	$ 21,298	$ 28,408